Single-pump multi-wavelength lasing semiconductor Raman pump laser and pump combination apparatus

Patent metadata

Field	Value
Publication number	US-9419409-B2
Application number	US-201214381749-A
Country	US
Kind code	B2
Filing date	Sep 27, 2012
Priority date	Feb 28, 2012
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A single-pump multi-wavelength lasing semiconductor Raman pump laser comprises a thermoelectric cooler arranged in a shell; a heat transition bearing platform arranged in the thermoelectric cooler; a semiconductor Raman pump laser tube core arranged on the heat transition bearing platform; and a coupling lens group, a thermistor and a backlight detector that are arranged on the heat transition bearing platform respectively. The pump laser tube core, the backlight detector, the thermistor and the thermoelectric cooler are electrically connected to pins outside a laser tube shell. A pump combination apparatus comprises a first signal transmission fiber, a pump signal combiner and a second signal transmission fiber that are sequentially connected to each other. An input terminal of the pump signal combiner is connected to an output terminal of an isolated polarization beam combiner and depolarizer. Two polarization maintaining fiber input terminals of the isolated polarization beam combiner and depolarizer are correspondingly connected to one single pump multi-wavelength lasing semiconductor Raman pump laser respectively.

First claim

What is claimed is:

1. A single pump multi-wavelength lasing semi-conductor Raman pump laser comprising a semiconductor Raman pump laser packing module, an output pigtail of the semiconductor Raman pump laser packing module, and a plurality of fiber-optical Bragg gratings set on the output pigtail,
wherein the semiconductor Raman pump laser packing module comprises:
a shell; a semiconductor thermoelectric cooler inside the shell; a heat transfer plummer set inside the semiconductor thermoelectric cooler; a semiconductor Raman pump laser die set on the heat transfer plummer; coupling lens, a thermistor and a backlight detector set on the heat transfer plummer and around the semiconductor Raman pump laser die, respectively,

wherein the semiconductor Raman pump laser die, backlight detector, thermistor and semiconductor thermoelectric cooler are electrically connected with pins outside shell of the laser.

2. The single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 1 , wherein a minimum distance between a first stage of the plurality of fiber Bragg grating and the semiconductor Raman pump laser die is greater than a coherence length of an intrinsic output of the laser.

3. The single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 1 , wherein there are at least two reflectance spectrum central pump wavelengths of the plurality of fiber Bragg gratings on the output pigtail of the laser, and the interval between two adjacent reflectance spectrum central pump wavelengths is greater than 5 nm.

4. The single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 1 , wherein Reflectance coefficients of reflectance spectrum of the plurality of fiber Bragg gratings on the output pigtail of the laser are same or different.

5. The single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 1 , wherein a difference between the reflectance wavelength of each of the fiber Bragg gratings and an intrinsic output wavelength of the laser within full operating current range and full operating temperature range is smaller than or equal to lock-losing limit.

6. A pump combination apparatus adopting the single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 1 , further comprising sequentially connected a 1st signal transmission optical fiber, a pump signal combiner and a 2nd signal transmission optical fiber,
wherein an input end of the pump signal combiner is connected with an output end of an isolated polarization beam combiner depolarizer, and two polarizing maintaining optical fiber input ends of the isolated polarization beam combiner depolarizer are respectively connected with a single pump multi-wavelength lasing semi-conductor Raman pump laser.

7. The pump signal combiner adopting the single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 6 , wherein the two polarizing maintaining optical fiber input ends of the isolated polarization beam combiner depolarizer are respectively connected with a single pump multi-wavelength lasing semi-conductor Raman pump laser in a manner of slow axis alignment or fast axis alignment.

8. A pump combination apparatus adopting the single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 1 , further comprising sequentially connected a 1st signal transmission optical fiber, a pump signal combiner and a 2nd signal transmission optical fiber,
wherein an input end of the pump signal combiner is connected with an output end of an isolated depolarizer, a polarizing maintaining optical fiber input end of the isolated depolarizer is connected with a single pump multi-wavelength lasing semi-conductor Raman pump laser.

9. The pump signal combiner adopting the single pump multi-wavelength lasing semi-conductor Raman pump laser in claim 8 , wherein the polarizing maintaining optical fiber input end of the isolated depolarizer is connected with the single pump multi-wavelength lasing semi-conductor Raman pump laser in a manner of slow axis alignment or fast axis alignment.

Assignees

• Accelink Tech Co Ltd

Inventors

• Bu Qinlian
• Zou Xiaohui

Classifications

• G02B6/2773

  Polarisation splitting or combining · CPC title

• G02B6/4285

  Optical modules characterised by a connectorised pigtail · CPC title

• H01S3/06766

  C-band amplifiers, i.e. amplification in the range of about 1530 nm to 1560 nm · CPC title

• H01S5/005 Primary

  Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping (H01S5/026, H01S5/18388 take precedence) · CPC title

• G02B27/283

  used for beam splitting or combining · CPC title